| 1 | //===--- SystemZ.cpp - SystemZ Helpers for Tools ----------------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "SystemZ.h" |
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| 10 | #include "clang/Config/config.h" |
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| 11 | #include "clang/Driver/Options.h" |
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| 12 | #include "llvm/Option/ArgList.h" |
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| 13 | #include "llvm/TargetParser/Host.h" |
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| 14 | |
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| 15 | using namespace clang::driver; |
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| 16 | using namespace clang::driver::tools; |
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| 17 | using namespace clang; |
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| 18 | using namespace llvm::opt; |
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| 19 | |
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| 20 | systemz::FloatABI systemz::getSystemZFloatABI(const Driver &D, |
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| 21 | const ArgList &Args) { |
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| 22 | // Hard float is the default. |
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| 23 | systemz::FloatABI ABI = systemz::FloatABI::Hard; |
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| 24 | if (Args.hasArg(options::OPT_mfloat_abi_EQ)) |
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| 25 | D.Diag(diag::DiagID: err_drv_unsupported_opt) |
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| 26 | << Args.getLastArg(options::OPT_mfloat_abi_EQ)->getAsString(Args); |
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| 27 | |
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| 28 | if (Arg *A = Args.getLastArg(clang::driver::options::OPT_msoft_float, |
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| 29 | options::OPT_mhard_float)) |
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| 30 | if (A->getOption().matches(clang::driver::options::ID: OPT_msoft_float)) |
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| 31 | ABI = systemz::FloatABI::Soft; |
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| 32 | |
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| 33 | return ABI; |
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| 34 | } |
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| 35 | |
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| 36 | std::string systemz::getSystemZTargetCPU(const ArgList &Args, |
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| 37 | const llvm::Triple &T) { |
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| 38 | if (const Arg *A = Args.getLastArg(clang::driver::options::OPT_march_EQ)) { |
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| 39 | llvm::StringRef CPUName = A->getValue(); |
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| 40 | |
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| 41 | if (CPUName == "native" ) { |
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| 42 | std::string CPU = std::string(llvm::sys::getHostCPUName()); |
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| 43 | if (!CPU.empty() && CPU != "generic" ) |
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| 44 | return CPU; |
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| 45 | else |
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| 46 | return "" ; |
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| 47 | } |
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| 48 | |
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| 49 | return std::string(CPUName); |
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| 50 | } |
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| 51 | if (T.isOSzOS()) |
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| 52 | return "zEC12" ; |
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| 53 | return CLANG_SYSTEMZ_DEFAULT_ARCH; |
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| 54 | } |
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| 55 | |
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| 56 | void systemz::getSystemZTargetFeatures(const Driver &D, const ArgList &Args, |
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| 57 | std::vector<llvm::StringRef> &Features) { |
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| 58 | // -m(no-)htm overrides use of the transactional-execution facility. |
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| 59 | if (Arg *A = Args.getLastArg(options::OPT_mhtm, options::OPT_mno_htm)) { |
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| 60 | if (A->getOption().matches(options::ID: OPT_mhtm)) |
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| 61 | Features.push_back(x: "+transactional-execution" ); |
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| 62 | else |
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| 63 | Features.push_back(x: "-transactional-execution" ); |
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| 64 | } |
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| 65 | // -m(no-)vx overrides use of the vector facility. |
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| 66 | if (Arg *A = Args.getLastArg(options::OPT_mvx, options::OPT_mno_vx)) { |
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| 67 | if (A->getOption().matches(options::ID: OPT_mvx)) |
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| 68 | Features.push_back(x: "+vector" ); |
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| 69 | else |
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| 70 | Features.push_back(x: "-vector" ); |
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| 71 | } |
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| 72 | |
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| 73 | systemz::FloatABI FloatABI = systemz::getSystemZFloatABI(D, Args); |
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| 74 | if (FloatABI == systemz::FloatABI::Soft) |
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| 75 | Features.push_back(x: "+soft-float" ); |
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| 76 | |
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| 77 | if (const Arg *A = Args.getLastArg(options::OPT_munaligned_symbols, |
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| 78 | options::OPT_mno_unaligned_symbols)) { |
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| 79 | if (A->getOption().matches(options::ID: OPT_munaligned_symbols)) |
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| 80 | Features.push_back(x: "+unaligned-symbols" ); |
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| 81 | else |
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| 82 | Features.push_back(x: "-unaligned-symbols" ); |
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| 83 | } |
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| 84 | } |
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| 85 | |
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